| Covers listed | |
| 2004: | December, |
| 2006: | May, August, |
| 2007: | November, |
| 2009: | May, November, |
| 2011: | March, June, |
| 2012: | July, August, September, December, |
| 2013: | April, April, May, August, September, October, December, December, |
| 2014: | January/February, March, April, May, June, July, September, October, November, December, |
| 2015: | January/February, March, April, May, June, July, October, |
| 2016: | March, August, |
| 2017: | January/February, |
